test-drb April 2000

test-drb@ccmp.vtda.org

159 participants
427 discussions

by peter.pachla＠wintermute.org.uk

Hi Sean, > You might want to take a look at http://parisc.workstations.org.... Thanks for that, someone else over in the Apollo newsgroup suggested that site too - and very interesting it is too. TTFN - Pete. -- Hardware & Software Engineer. Sound Engineer. Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk --

25 years, 1 month

Lubing Shugart 800,801's?

by allisonp＠world.std.com

First item,, I've seen lots of 800/810s with lube on the leadscrew from the factory. Two, carb cleaner is toxic and usually bad for most plastics. My cut is pull the lead screw/stepper and properly clean it and lube very lightly with good molly grease. >that is available to you, then lubing it with a LIGHT coat of (one drop for >every three drives) of WD40, then adding about 1/4 tsp of moly-disulfide, WD40 is penetrant and evaporates very quicly leaving mostly nothing. After your done cleaning any know good disk will suffice for alignment. I've even eyeballed them in. the tracks are really quite wide! Allison

25 years, 1 month

Complete List Archives Available!

by af-list＠wfi-inc.com

Hi, I know Kevan indicated recently that he was in the process of rebuilding his archives, and I'm not sure of the current status of that, but in the meantime I've put up all archives since March of 1997 (start of the list) at http://www.retrobytes.org. I can't express how many times his archives saved me and I just wanted to get that information back up for the public as soon as possible. I was a little shocked when I sent the U Washington Listproc server an "index" command and found that they still had all of the list archives available! Another thing that amazed me was how *prolific* this list has been in the past. One month (April 1999) was just shy of *3000* messages! I haven't totaled everything, but I would easily guess that there's upwards of 50,000 messages for the last three years. What an unbelievable technical resource! I think there was a comment about the volume of messages that Tony Duell posts; if you have any doubt, look through any of the months by Author to see just *how much* he contributes here. One of the things I'm considering is making a CD-rom distribution of the list archives available to list members; any interest? It would allow for faster searching and accessability to the archives for someone working on a classic system not in the immediate vicinity of an internettable computer. I could make it available as an ISO image download by individual request, or burn CD's here for the cost of media/shipping. I still need to add the search capability, so I'm seriously looking for someone with experience setting up Glimpse or something similar. Also, any ideas for setting this up for a CD version would be appreciated. Cheers, Aaron Special thanks to Hans Franke for supplying me with his saved archives, before I knew about UWash's listproc archive...

25 years, 1 month

A New Find

by jrkeys＠concentric.net

The other day I was given a Sym model 1 in a custom case of black metal with wooden sides and a built in keyboard sold by Synertek. There small wooden door on top that lifts off to view the on board LED and KB. This system has been upgraded with extra memory and other features. He also gave all the documentation for it and some newsletters from an old Sym computer club that used to be at Honeywell. The board is dated 1978 with SN 3433. It will be a great addition to my collection and I hope to fire it up soon.

25 years, 1 month

Looking for: Ai Cybernetic Systems Model 1000 Speech Synthesizer.

by ss＠allegro.com

Hi, I'm looking to find a particular S-100 bus speech synthesizer: Ai Cybernetic Systems Model 1000 Speech Synthesizer. (Photo, info at: http://web.inter.nl.net/hcc/davies/mvaicyb.html) I'm just sort of interested in seeing one, because a friend designed/built them. thanks, Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler

25 years, 1 month

IP11 test manual wanted

by hofmanwb＠worldonline.nl

I have IP11 test programs on RX01 floppy, but where and how do I get the manual for these tests? I live in Arnhem, The Netherlands Thanks in advance, Wim

25 years, 1 month

ATTN: Will Jennings

by jpl15＠netcom.com

My private e-mail seems not to be reaching you either... you might be getting what you're paying for from your ISP. :) Obclassiccmp: this concerns a computer rescue... it's OT. Cheers John

25 years, 1 month

The best docs I've ever seen

by xds_sigma7＠hotmail.com

Hi, FWIW, the best docs I've ever run across are the old Interdata/Perkin-Elmer manuals for my 7/32's, 3203's, 3205, and 3210's... the 7/32 manuals even include a complete listing of the microcode! All of the test program source code is included in the test docs, and I have the source code for the OS also. Will J ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

25 years, 1 month

Lubing Shugart 800,801's?

by CLASSICCMP＠trailing-edge.com

>When they say "do not lubricate ..." they're not lying! If only the previous owners/techs had understood this! > The grit and grime >that finds its way into the leadscrew will act as lapping compound and >abrade the lead screw, which in most of the newer lead-screw-driven >mechanisms is plastic, and soon, you'll have a drive with too much backlash >on the lead screw, which will result in positioning error, depending on the >direction in which the lead screw was last moved. I've got 14 Shugart 800's and 801's from this latest pile now undergoing the DSD Hyperdiagnostics simultaneously (lots of head kerklunking!) and I see no evidence of alignment problems on any of them. I'm strongly of the opinion that 95% of alignment problems are created when folks go in and fool with the alignment when there's nothing wrong in the first place. > I would probably feel >comfortable cleaning out the gunk with a penetrating oil wuch as what you >mentioned, but I would vigorously pursue the problem of getting the rest of >the sticky residue out with a volatile solvent. I think "Liquid Wrench" is both a penetrating oil and a mix of volatile solvents. And in spraying it in I added my own oil to the lubricating mess that shouldn't be there, but now at least I can turn the leadscrew and run the drives through their paces. >That, in turn, threatens to soften the plastic head-assembly, part of which >is the "nut" for the lead screw, so don't get any of the benzene or methyl >alcohol, or acetone, on the plastic parts, lest they soften and change their >shape. I appreciate that, I learned long ago to test chemicals against plastics when a can of TV tuner I had dissolved the plastic shaft in an old TV... >I'd suggest that you look at the service manual and consider whether this >bothers you enough to warrant going through the painstaking process of >disassembling and cleaning the head transports in order to get rid of the >grease. If you're careful, you might find a way to brush out the threads, >but they'll continue to accumulate dirt and grit so long as you have grease >on the "nut" which is part of the head assembly. Yes, I can do a halfway decent job with skewers and Q-tips to get the goo out of the threads, but there certainly is some still left in the threads on the head assembly/pre-load nut and that I can't get at without removing the whole assembly and destroying the (currently fine) alignment. Tim.

25 years, 1 month

Shugart 800-2

by allisonp＠world.std.com

From: Lawrence LeMay <lemay(a)cs.umn.edu> >Does anyone know if a Shugart 800-2 8" floppy drive is DSDD or not? I have >been getting different hints on various web pages. Definatley single sided, though it can run single or double density. I'm very certain as I have a few 800s and 801s. The twosided versions are the 851 and 855. Allison

25 years, 1 month

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test-drb April 2000